Liquid-dispensing apparatus



p 2, 1930. T. DI TELLA LIQUID DISPENSING APPARATUS Filed April 4 1928 5 Sheets-Sheet .l

Isnventor .72;- c as: Z?) i B I M. W attorney Sept. 2, 19 130. T. DI TEL LA 1,774,790 LiQUID DISPENSING API ARATUS Filed April 4, 1923 5 Sheets-Sheet. 2

Ill

Bnventor.

* v .Tgrcuafo .06 .ZeZZz.

S t. 2, 1930. Y T, DI TELLA ,77 ,7

I I LIQUID DISPENSING APPARATUS Filed April 4 1928 3 Sheets-Sheet 3 Smaentor forcug z'o 0 ZeZ'Za M Gttorneg Patent d SeptLZ, 1930 i v LIQUID DISE1$TSI1TGAPIBARATfiS App1ication filed A ing; 1'928 Seria'1 N f'o 267,423; and in GreatiBritain Febrnariv u This. invention relates to apparatus 'for measuring and dispensing liquids in'fpreder, termined quantities, and? it has special r'efer- Ience to apparatus of the type 'shown'a nd de-' Serial Not 5 scribed in my i prior "application;

1&2;4f99, filed October'18, 1 926;

The object ofthe invention; isto 'im reve generally the construction .ofmy earlier form insure. the "discharge of of liquid forvvhich-the l f mechanism has been set, and to prevent fraudof apparatus so as to '10 the precise quantity ulen t operation by elther premature; or} jde lalyed opening 7 or closing :OfJt/he controlling In: articular 'the present invention-v valves, v p p involves the provision of "hydrauliclocks in connection with certain parts of the apparageneral is governed. 'These' 'featur'esvand 5 iInprovernents, the 'inventlon,

will; be described at length? in the course of i he follovvingvdescription;

In the accomp anying drawings; Figure 1 V is aside View, partly in sect-ion, showing the apparatus in its normalcondition, Withthe dispensing vessel empty; Fig. 2is a view of similar character-[but showing the apparatus after theindicating mechanism fhas'been' set V p usted by means of a suitableineohanisrn"emj I bodyinga 'Vertical'rack 10 operated by a pin m and overflow of excess liquid suppliedto the dispensing vessel has commenced; Fig. 13

' also a view of similarbharater but shov'vi'n'g' v 7 p peby an intermediate rod 12'; the move-u onto-fthe rack being-controlled by'an asthe position of thefpartsafter the discharge ofthe liquidfrorn the-dispensing vessel has,

Q understood that the invention-isnot liniited to th'eprecise details thereof.

' Referring 'more particularlyfto the draw T ping', linclicates a transparent measuring-and t '-d1s k-1s--fiXedto the'oppositeendof the shaft and is provided with a cam 1 6" 'for 'addispens ng vessel, fitted at its botto'ni with a r discharge' pipe 2 in Which an outlet valve 3' I (preferably of, the rotary; plug ftyp'ey is" "nioun ted The vessel is supplied vvithgasolene or other liquid from-amain-reservoir or. storagetank' (not shown'yby afeed or;de-

Q which is] selectively'engaged by ,a-set of-st'ops v 19, of Whichthere is one for'eachof; the dif ferent'quantitiesot liquid tdbe PdiSpensed v livery pipe ,4, the upper endof fvvhich'oven hangs and projects int'ofsaid ve'sselgfthe said V mounted in v the pump.

as well as 3 others comprisedin Wall of the vessel having graduations marked thereon atdifierentheights or levels to indi feed-pipe to the dispensing vesselbyzrneansj of a pump 5, operated rnanually or-otherwise, V andits flow is controlled byan inlet valve6 the pipe'at apointslightly' above fThelevel liquid inwthe 'vessel is contr'ol lectb y a vertically-adjustable overflow pipe7', which is raised an'd'lovvered backfto the rnainftank o'r 'reservoir; and it,

through the pipe and then into the return plpe 9 which delivers it to the tank.

ion ll and connected tothe lower end of the sociated' setting and indicating device; This which co'a'cts with th e'setting disk. A second as justable engagement with the adj acent end. of a plunger or finger 1'7'slidably mountedin These-stops 19" are mountedin superposed re "cate di-flerent qu antities ofiliduid' .to vb-eidis d .pensed. Then-liquid is forced throughgthe to bylnechanism" subsequently described s'aid pipe normallyoccupyi'ng itshero'positi0n;-in* p 1 whizch i ts upper end is disposed substantially 1 i fiushf with; the lbottorn' oftheflvessel; {This 'pipe is arranged within a-- tubular guide 8 I i "which forms part off a return 'pipe -9Yleading it i tus and, also, an improved system of controls p t i k v v 'Whereby the op'eration' o f the movingparts in passes through the'bottomof thedispeI'1singv fvessel in a mann-erlto formaa-liquid-tight joint, '7 Du'eIj to this arrangement, and assuming that i thefoverflow pipe 7 j has been set at the proper; height to correspond to" the amount of liquid -to be dis'pensed'+'10 liters int-he case of Figs f2 and 3-theliquid supplied to the vessel-in excessof that amountwill'run', ofi into and {deviceconsistsof a graduated disk 13 mount- 8-; edjon one end of a shorthoriZonta-l' shaft 14L V I which is rotated by turning disk 13 Orin-any i. V yother desiredway, theextentofrotation be-I i-ngdetermined a pointer or indicator =15 v lation (preferably, in anadjustable manner Y so that their posltions can be changed) on a and they are arranged stepwise in'increasinglengths, from the topmost to the bottommost, as shown. 1

The plunger or stop 17 is pressed against V the cam disk 16by a spring 17 and the cam 16 on'said disk is, of variable height, according to the different amounts of liquid 1 to be dispensed, so thatby adjusting the settingfdisk 13 for the proper-"amount the plungersto'p will be moved'into a position in "which its head l7 will lie in the path of the adjacent end ofthe corresponding stop 19 to i be struck thereby'when therack 10 and its associated set of stops are raised. The move ,ment ofthe rack isthereuponarrested.

;Rotation of pinion 11 isetl'ectedbymeans of a horizontal shaft 22 whereon it is loosely mounted, .means being provided for auto- -matically coupling and uncoupling the pin ionand shaft at the propertimes. Shaft 22 carriesa handle 23rat-one end for rotating i it, and it is mounted for-.endwise movement .against theaction of a spring 2 lwhich tends. toi'orceltoutward'or to the r1ght,.as here- 7 a nafterj explained.) To couple the pinion to the shaft, the latter has fiXedto-ita disk 25 'zprovidedon o'neface with a clutch'member 'or tooth 26 which is designed for periodic engage'ment' with a] complemental clutch "member 27- secured' to the pinion the spring 24 acting tomaintain I this engagement.

While suchengagement is in force, the rota-- tion of disk25 by shaft 22will be transmitted tothepinion," and the latterwill be driven and, in turn, will raise therack and, hence, the overflow pipe. 5 The stops 19 move up ing tothe amount, for which the" indicating device has been set strikes against the plunger nates the movement ofthe rack, which is I thus held stationary and, in turn, locks the p n on against rotation. The latter ,then

'olfers aresistanceto the further rotation of shaft 22 (whichcanbe regarded as the main or operatlng shaft) and when this resistance :clutch parts 26 and27. will-force disk 25 and [its shaft'22'in a direction away from pinion 'The' opening andsclosingmovements of the valves 3 and 6,;as well as the operation of certain other partsand devices hereinafter described, are governed by a controller 28,

here shown asconstituted by a cylinder loose- 1y mountedon ashort shaft 22zwhich alines with shaft 22. f This cylinder isprovided at 31, while the intermediate portion of its circumferential wall has two cam grooves or tracks 32 and 33 formed therein and receiving studs 34 and 35. Rotation of the cylinder is effected by coupling it to disk 25 at the proper times, by means of a lateral pin 36 on the cylinder engaging in an opening 37 (Fig. 1) in the disk; such engagement being obtained when disk 25 cammed backward by the parts 26, 27. v

The rib 29 on the controllercylinder is cut away at 38'to provide a space or gap, and at the opposite sides of this gap the rib is bent laterally, which gives it a somewhat spiral or cam-like appearance atthis point. The rib coactswith upper and lower horizontal slides 39 andAO provided at wide intervals with relatively-large vertical teeth, one tooth39 ontheupper slide 39 being designed to be struck by a projection or lug ll on the cylinder, the rotation of which is thereby stopped. Both slides are guided and supported to their endwisemovements in suitable manner the lower slide 40 being so arranged as to travel through-the .rib gap 38 at the proper times. Slide 40 extends toward the movable serles of stops 19 and is prov1ded at the end achacent thereto witha. forked or slottedhead 40 for interchangeable engagement with the teeth or .parts being beveled or inclined revcrsely to each other, so as to force or cam the slide backward. or to the left when the rack is about to complete its descent, after said slide has I been shifted to the'right by the passage of. ward-with the rackuntil theione correspondthe cam part 38 of-tlie rib through the tooth space 39 to the right of tooth 39. This "movement, however,- will be more fully de scribed later.

Reverting to the operation, and commencing at the point where the controller cylinder K 28 is coupled to the clutch disk 25 and starts to rotate, it will be seen from Fig. 1 that the gap 38 in the rib 29 straddles the lower slide 40, which latter will immediately be shifted I p :.to theleft by the travel of the cam or spiral *is overcome, the continued engagement of part of the rib through the lirst'tooth space 40 1n the slide and Wlll en a e its slotted b to head l0 with the lockingftooth 19 on the stop 19 which happens to have been selected,

thereby making doubly sure that the position ofthe overflow tube 7 cannot be changedan d, at the same time, completing the interlock between the clutch. disk 25 and the controller which was initiated by the shifting move- ..ment of said disk produced by the action of the interengaging parts 26 and 27. This completion of the interlock 18 due to the fact tha the disk 25 proyects slightly into a second tooth space s0 in slide 40, so that the two i I so fimovement to the left, and at the conclusion o thereof the g r wi' ism-r560? the v parts.25;,and.tOimust}therefore; move ii-n unison; this being equallytrue, of course; for the: aforementioned initial leftward movem'ent ofthedisk. I if;

Now, the rib'29 is straightyexcept for gaipped .cam portion38fso that the continued rotationof the controller cylinder 28 produces Y obstructthe rotationfoffthe cylinder inor change the position o'fthe. slide until-the cam! 1 7 part 38 of the ribreaches. the to' th'-39 and shifts the slide to the'right, 'Whichitis then freeto d'o 'since lug'tl is in line withjspacei 39 and arm 42 has moved upward Wlf/l1 r2l(}l lOrby that time. Theshifting movement;

however, brings tooth 39/ into line" with; lug 41; so that when the cylinder completes its.

revolution the parts lland 39 will Contact and the rotation of the cylinder is thereby terminated. But before that occursgth cam part'38 of rib 29 Will have 1shiftecl.; slile LO a distanceto the rightequal to its: previous tooth spec e' fi) in theslide, the; movement of cam, rib 29, as aboveexplained itcarries the latterdisengaging itslieat. lO irointhe active stop19and unlocking the fuel; Shaft- 22 must then be turned counter-clockwise through one revolution (since held against clockwise ITIOtIQIl bY the inter- 9 gaged parts 39 and41') 1n order to return the mechanism to its ori inal 3osition.-

When slide is shifted tothe right by'the the clutch disk'25 Withit,,due to the engagement of the latter" intooth space LOFfbut this movement is not greatenough tofwithdraw saidldisk from the controller pin 36,

v 7 that being effected by spring'24 whichacts directly on shaft'22 and forces it furtherto the right, thereby uncoupling'the disk icompletely from the controller and, at the same timeyeflecting a similanmovement of slide 40.- The" counterclockwise movement joff shaft22 is-then commenced; and since the; rightward, movement of the clutchfdisk Will have the'leflfe'ct of coupling it topinion ll,

.' due'to the 're-engagement or" the parts 26 and 27, said pinion will be driven in a direction -to lower the rack and, Wltl'l'it, the overflow f the beveled end of slide 39, producinga C t-in? vi'ningaction Whioh'forces the slide back-and thereby brings its toothspace 39? ,intojl-ine *Wlth lug 41, so that the controller is th-ijis-nn-, 7 locked; for the next, cycleof; operations; i

foreg oing'description relatesimainly I of v whiohg-is :ifixed .enetherarm 147, the latter carrying the stud 351 thatiworks the cam-r "track 33. The crank 43,. is -actuete'd shortly after the cylinder has commenced to rotate;

at which timethewadjustmentoftheiovero, How pipe-7.',vvilllhavebeen; completed; such action eli ecting the'opening of valve 6, Where-' upon the liquid'can be pumped throughfeed a p pipe 4 into vesselflp The outlet 'valve3is 1 e V "normally closed'andmaintainsthatposition until afterthe feeding'has ended,"\vhi1e;the" V o a by thefshapeiof track 32and thereafteris ref f I inlet valve is, kept openiorthe 'proper time turned to closed-position.

pens'ed "is-supplied to vessel 1 the excess liquld" escaping. throughthe overflouifpipe 1 It hasv already been explained that quantityof liquid greater than that to be dis-1 Tand the return pipe 8 9. If itwere possito. the locking and "unlocking of the various devices. comprised in the apperatusj, and to r the controlingen'erali: Astotheinletordeliv I ery valve'6 andfthei outlet or discharge. valve In r Y 3, thesejare likewise actuated automatically f under tfhe controloicylinder28,, viThelinlet" .7 t' i valve-6 has-connected to its's tema crank arm gjxvhichicarriesthestud3=thatoperatesin l,

thefcaingtraclt 32in theircontroller cylindery v t 7 while the Outlet valve, 3*hasa suitablecrank Q- CQHhG'CtiQH;ttwlth a c rankijarm 4o'secu i'ed' I teaverticalrock shaft l6,:t o th'e loiver' end 7 ble toclose the inlet valve and open-the outlet-:valve 1-before the proper level is "estabvlished in -said vessel, more liquid "would be dlschargedthan called for, andto avoid this an hydraulic lo ck'i's provided which pr'eventsf I turely'J- This locking device, which forms the subject of mycompanion application, No.-

ofa-cylinder 4&5containingv a piston :9,the

rod of which is connected to a crank arm theoutl'et valve-from being-opened premaips 267,242, filed of even date herewith, consists io liquid from the return pipe 9xby a pipe 51 and exhausted by a pipe 52 which leads back to PiPGiQQPlPBfiQ howeveryis designed to carry off the l qu dmore slowly than it is supplied vcylindertli rougha ventpipe 53 as the liquid shaft 4:6 andholjdsit againstmovenient; this condition being maintained until-overflow, j ha s'ended and cylindert8xhasf been drained pipe 7.. At the conclusion of the downward F movement ofthe rack, its arm-.42 hits against 7 through pipe 52;

valve 6 has been'fopened andclosed the relaby'pipe 51, so that; cylinder 'iS' ill fill very rapidly and" the liquid in front c ofipiston fwill be trapped andwill prevent the piston I from moving gthe'air being forced out of the f .I t ill be understood; course; that rock shaft-46.15 not actuatediuntil after the inlet tivetimingof the op mtionsj depending on 1 the shapes of theican traclis 32 .andf33. In i any case, outlet val e i cannotibeopened" untiliitliehydraulic locli'cylinderr-d has been emptied, thereby permitting movement of the lock piston- Yvhen thistahes place, shaft 46 is rocked, andxits' arm 45opens the valve,

- whereupon theliquid is dischargedthrough Oncedischarge 3 must be keptfopenuntil it has ended;and

5 to ell'ect'this, a second hydraulic-lock is pro-" vided which likewise-comprises a cylinder Manda piston workingthereinl Cylinder Filis supplied with liquid from pipe 2 at a point above the normally closedvalve 3 by a'pipe 57;'tlie trapped liquid locking piston 55in its outer position until emptied back througlrpipe 57 when the valve 1s opened;

The movements of piston55 are efiected by a crank arm 59"secured to the adjacent end of the stem of'valve 3 and pivotally connected to the lowenend of the rod'o'f said piston,

so-that the movement of the valve by the parts,

4 piston. l l V v Inthenormal' position of parts, represented inFigl, both valves 3 and it" are closed, and piston 55 occupies its upper or inner position 44 will thus be transmitted to the in cylinder 54:. The setting mechanism is then adjusted and actuated, thereby posi- 'tioning the rack 10 and related parts, including the overflow pipe 7 while at the same time opening the inlet valve 6, whereupon pump 5 is. operated to supply liquid through pipe 4% to the dispensing vessel 1. The latter continuesto fill until overflow takes place through pipe 7, some of the liquidffrom the vessel passing-through pipes 2 and 57 into piston 49 and,lience, the rookshaft 4c6,'with the result that said shaft can then be turned by the controller through a reverse movement which opensthe outlet valve 3. This same movement brings piston 55 into its lower or outer position 8) in which it is locked against upward movement andthereby keeps valve 3 open' until all the liquid has been discharged fromvessell. The concludingportion ofthe movement of the controller then :es the valves to initial position;

i 'lfdes red, the various amounts of liquid li sensed can be registered and'totaled; a

; mechanism maybe operated automatically in any desiredf'manner as, for instance, by ,a rocking lever system 63 arranged in the path of the stops'19so as to be engaged and actuated by each stop as itpasses thereby] I claimasf'm'y inventiont 1Liquid dispensing apparatus, comprising a dispensing vessel providedwith an outlet valve; an overflow pipe movable in said commences, the outlet valve outlet valve in closed position during his counting or: registering mechanism. (32 being provided for that purpose. This provided with a separate cam vessel to dift-"erent definite heights; means for raising and lowering said pipe; and means for locking the outlet valve in closed position during the continuance of the overflow. 2. Liquid dispensing apparatus, comprisinga dispensing vessel provided with an outlet'avalve' an overflow 3i e movable in saidvessel to dil'ierent definite heights; means for setting said pipe and a hydraulic lock acting to hold the outlet valve in closed position during the continuance of the overflow.

3. Liquid dispensing apparatus, comprising 'a dispensing vessel provided with an outlet valve; an overflon pipe-movable in said vessel todillerent definite heights; means for pipe; means for locking the pipe on; means for locking the outlet val we in closed position during the continuance of the overflow.

4:. Liquid dispensing apparatus, comprising a dispensing vessel provided with an outlet valve; an overflow pipe movable in said vessel to different definite hei hts; means for setting said pipe; means for locking the pipe in position; means for locking the the continuance of the overflow; and a device common to both locks for determining their activity.

Liquid dispensing apparatus, compris- 1 ing a dispensing'vessel; inlet valve and an outlet valve connected with said vessel to determine its supply and discharge of liquid; an overflow pipe movable in said vessel to diiierent definite heights; means for setting said pipe; a lock acting to hold the inlet valve in closedposition until said pipe has been,set; and a separate lock acting to hold the outlet valve closed during the continuance of the overflow.

'6. Dispensing apparatus, according to claim 5, in which both locks have a common controller. '7; Dispensingapparatus,accordingtoclaim 5, in which a lock is provided for holding the overflow pipe in set positiomand in which a common controller is provided for all three locks.

8. Liquid dispensing apparatus, comprising a'dispensing vessel; an inlet valve and an outlet valve connected with said vessel to determine its supply and discharge of" liquid an overflow pipe movable in said vessel to different definite heights; means for setting said pipe; a lock acting to hold the inlet valve in closed position until said pipe has been set; a separate lock acting to hold the outlet valve closed curing the continuance of the overflow; and a rotary controller associated' with both loclzsto govern their activity.

9. Dispensing apparatu s according to claim 8, in which thcirotar controller is track for each valve, and a separate connection between said 60 y movement.

- 'ifiiveo I controller and each valve embodyingvan ele: ment mounted to travel, alongthe respective I track. l

10. Liquid 7 dispensing apparatus, 7 ing a dispensing vessel'provided with a valved;

outlet 5 an overflow pipe movable in thejvessel to different definite heights} mechanism for and locking means acting automatically; to; engage the seleotedstop ed position.

setting said pipe, embodying a verticallyv movable seriesoi' superposed stops and an {element settable ato engage aselected stop and thereby arrest the movement of thestops and hold-it in'iar'rest 11. Liquid dispensing apparatus coinpris ing a dispensing, vessel' provided with a valved outlet;"an*overflovv pipe movable in a vertical rack connected to the'pip'e, a p nion to moveth'e same, ajvertic'al series iof stops a unit; and an element 'settab'le to engage a selected stop during the upward movement g, of the rack-and thereby arresttsuchmove f -w i I v 5. 'j 12. Liquid dispensing apparatus, compris 7 ing adispensing vessel'provided with} valved I outlet; an overflow pipe movable 'inlthe vessel setting saidrpipe, embodying a vertical rack I 3 [connected to the pipe a pinion to move the same, a vertical series of stops connected to 7 said rack to move therewith as a unit, and an element s ettabl'e to engage a selected stop. during the upward movementoftherack and connected to said rack tomove therewith-as,

to different definite heights; mechanism for thereby arrest such movement and" locking plungerin the cylinder controlledby liq- 16. 'Liquid d spensing apparatus, colfipris Q inga dispensing vessel provided with; an out i letvalve' and ithan overflow device operat- I .ingmeans for openlngandclosing sa d valve;

and means activatedby the overflovvduring Y its continuance for locking said operating ating means Pagainst "valve-opening moveing said-operating ing movement.

means against valvej-clos Intestimonyvvhereof aii'ix' '7 a TOBCUATO DITELLA," g

7 means acting automatically to engage the se- 1 lected stop" and hold it in arrested position. a 13.Liquid dispensing apparatus, compris- Y 'ing a dispensing vessel provided With fan out i let valve and a' vertically-adjustable ov e flow device; setting means for said device 0P erating means for'opening and closing said i valve; andmeans activated bylthe'overfiow' ,during its continuance, for locking said'iop .er'ating'meansagainst valve-opening move- I "14. Liquid dispensing apparatusycomprising a dispensing vessel provided With; an

outlet valve and a vertically-adjustable over-f flow device; setting means for said device; o'pcrating means for opening and closing-said valve; means activated. by the'ov erfiovv. 'during its continuance for "locking said -.opera ting means against valve-opening movement; 7

and separate means activated by the dis- Ji charge during its continuance for-locking I said operatingjmean's against, valve-closing V 15 Liquid dispensing apparatus; according to claim'lgg'in which at least one locking meansagainst valve-opening movement; r

Y 17 Liquid dispensing apparatus, coinpris mg a dispensing vessel providedwithan out-1Q let valve, andWitlri anpVerHOWQdeViQe;oper ating means for opening andjclosing Isaidg; valve; means 'activated'by the 'overfiovvfdur "'ingits continuance for locking-said Opel?" ment; and" separate means activated byfthe discharge jd'urlng' ts continuance, for lock-j 

